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zaina asked in Science & MathematicsPhysics · 1 month ago

# A fighter jet has a liftoff speed of 286 mph. what minimum constant acceleration?

### 4 Answers

Relevance
• 1 month ago

In most REAL cases the important information is the length of the runway.  Equally you will need to be able to convert the speed to other units.  Very few runways are measured in miles.  And very few takeoffs take hours.  So you will need to convert the speed to feet/sec or m/s first.

• Jim
Lv 7
1 month ago

V = a*t so you need the time or distance!

• 1 month ago

You need one more piece of information - either the time it takes to reach liftoff speed or the distance in which it has to reach liftoff speed.

• 1 month ago

You didn't finish the question.

If you are given a particular TIME (t), the constant acceleration needed is (286 mph)/t.

If you are given a particular runway LENGTH (L) the constant acceleration needed is (286 mph)^2/(2L).

Probably good to change mph to meters per second before you do anything else.

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